55results about "Burner material specifications" patented technology

A combustion membrane (14) for a gas burner (2) comprises a fabric or mesh (21) of interlaced metal threads (22), having two opposite interlacing surfaces (19, 20) which form a combustion surface (19) and an inner surface (20) of the fabric / mesh (21), respectively, wherein the metal threads (22) are formed by twisted metal fibers (22) to form a yarn and:the individual metal fibers (22) are shorter than the yarn (22) formed therefrom, and free ends (22″) of the metal fibers (22) protrude divergently from the yarn (22) along its longitudinal extension and make the yarn (22) hairy, andthe metal thread (22) is a yarn (22) of mass per length in the range from 0.8 g / m to 1.4 g / m.

To significantly improve the combustion of a fuel gas containing at least 95% hydrogen by volume in a gas burner (10) for heating purposes, a burner body (16) for the gas burner (10) has been proposed, which, as a burner surface (38) for the passage of a premixed fuel gas-air mixture into a combustion chamber (14), has a perforated metal surface (40) which has through holes (48) such that less than 5% of the burner surface (38) is open. wherein the through holes (48) have hole diameters D with 0.4 mm ≤ D ≤ 1.0 mm, wherein the hole diameters D and / or hole lengths of the through holes vary.

This invention relates to a heat exchanger type burner base unit (100), comprising: a burner base (1) having: a burner air inlet for supplying burner air, an exhaust gas inlet for drawing exhaust gas, and a combustion gas inlet; a heat exchanger (20) connected to the burner base (1) having a heat exchanger body (21), the heat exchanger body (21) having at least two separate flow channels for guiding counter-flowing fluids, and the heat exchanger body (21) further having an inner cavity (27) for forming or guiding through at least one combustion gas conduit (31, 32); characterized in that the burner base (1) is designed as a flat burner base element (10) or includes a flat burner base element (10). 0); the burner base element (10) includes at least one gas passage opening (14) and / or at least one gas passage opening (13) and / or at least one opening, the at least one gas passage opening (14) being used to connect the burner air interface (33) to a flow passage in the heat exchanger (20), the at least one gas passage opening (13) being used to connect the exhaust gas interface (34) to one of the flow passages, and the at least one opening being used to connect to the combustion gas interface (31, 32); a flat support surface (10.3) is provided on the front side (10.1) of the burner base element (10) facing the heat exchanger (20) for connection; and the heat exchanger is integrally connected to the support surface (10.3).

The present invention relates to a parting sheet (1200) for a burner (1000), to a burner and to methods of manufacturing the same, wherein the parting sheet (1200) is configured to be arranged in or to be manufactured in a cavity (1120) inside a wall (1110) of the burner (1000) for flowing a cooling fluid through the wall of the burner, the parting sheet (1200) comprising a sheet element (1210) and a number of baffle elements (1220, 1230, 1240), wherein each of these baffle elements (1220, 1230, 1240) is provided at a predetermined position on a surface of the sheet element (1210) inclined by a predetermined angle (1221, 1231) towards the sheet element.

Disclosed are a fire grate and a gas device. The fire grate includes a casing, a combustion cover and a metal mesh. An airflow channel is formed inside the casing. The combustion cover is provided at the top portion of the casing, and is provided with a plurality of first fire apertures communicating with the airflow channel. A plurality of first rivet parts are provided at the top surface of the combustion cover. The metal mesh is provided at the upper surface of the combustion cover, and covers the plurality of first fire apertures. The plurality of first rivet parts press and fix the metal mesh to the upper surface of the combustion cover.

A combustor and a water heater using the same. The combustor (10) comprises a plurality of flame distributors (100) which are arranged side by side in the width direction, each flame distributor (100) comprises at least three ejection tubes (110), and each ejection tube (110) is sequentially provided with an ejection section (110A) and an gas outlet section (110B) along the gas flow direction. Each ejection tube (110) comprises a throat (114) and a diverter (112). The throat (114) is provided at the minimum cross-section of the ejection section (110A), the length of the ejection section (110A) is H1, and the maximum width of the throat (114) allowing gas to pass is D1, wherein 8.5D1≤H1≤9.5D1. The diverter (112) is provided in the gas outlet section (110B) and has a top corner (112C) for diverting gas to two sides, and the angle of the top corner (112C) is 45 degrees to 85 degrees.

A powder coated aluminum barbecue pit burner that burns gas in the same way that stainless steel burner tubes do, but last longer and do not rust. The use of powder coated aluminum makes the burner according to the present invention corrosion resistant. Additionally, the powder coated aluminum burner of the present invention also contain a heat sink element that prevents the temperature of the tubes from getting too high. Controlling temperature and using powder coated aluminum burners, instead of stainless steel, ensures that the burner will last longer. Another embodiment utilizes a water cooled system in connection with the heat sink element.

To suppress back fire as much as possible while suppressing pressure loss even in a case when a fuel gas is a hydrogen gas, in an all primary combustion burner which includes a burner body 1 having an air-fuel mixture chamber 11 to which the air-fuel mixture of the fuel gas and primary air is supplied, and a combustion plate portion 2 covering an opening face 12 of the burner body facing the air-fuel mixture chamber, and in which a back fire suppression plate portion 3 opposed to the combustion plate portion at an interval is disposed, and the air-fuel mixture passing through the back fire suppression plate portion is injected from the combustion plate portion to be burned.SOLUTION: A back fire suppression plate portion has a sintered compact sheet 33 obtained by sintering a laminate on which metallic fiber or metallic beads are laminated.SELECTED DRAWING: Figure 4

A combustor (100; 200) for a gas turbine engine (20) includes a liner (102; 202) surrounding a fuel and air mixing body (104; 204). A fuel supply passage (118; 218) communicates into an open fuel plenum (120; 220) downstream of the fuel supply passage (118; 218). A wall (199; 299) of the mixing body (104; 204) has air openings (106; 206) to receive air flow, and communicate air into mixing passages (107; 207). The mixing passages (107; 207) pass through the fuel plenum (120; 220). Fuel openings (122; 222) in the mixing passages (107; 207) allow fuel to flow from the mixing passage and mix with the air. There are passage sections (108; 208) extending downstream of the fuel plenum (120; 220), such that the mixed air and fuel travels downstream of the fuel plenum (120; 220) and into a combustion chamber (105; 205). A gas turbine engine (20) is also disclosed.

A hydrogen combustion burner utilizing hydrogen gas as a fuel gas includes a burner body 1 with an air-fuel mixture chamber 11 into which an air-fuel mixture of hydrogen gas and primary air is supplied and a combustion plate portion 2 covering an opening surface 12, which faces the air-fuel mixture chamber, of the burner body. In the hydrogen combustion burner, the air-fuel mixture ejects from the combustion plate portion and undergoes combustion. The hydrogen combustion burner is configured to effectively suppress backfire. The combustion plate portion includes a sintered sheet by sintering an aggregate of metallic fibers, and the aggregate is not formed by weaving or knitting the metallic fibers.

A combustion membrane (14) for a gas burner (2) comprises a fabric (21) having two opposite fabric surfaces (19, 20), which form a combustion surface (19) exposed on the outer side (17) and an inner surface (20) facing towards an inner side (18) respectively, wherein the fabric (21) forms an interlacing of metal wires (22) comprising warp threads and weft threads transverse to the warp threads, and wherein both fabric surfaces (19, 20) form ribs (23) in high relief alternating with valleys (24) in low relief and that both the ribs (23) and the valleys (24) have an extension, in at least one direction in the plane of the fabric (21), greater than the space occupied by at least three consecutive warp threads in the weft direction and greater than the space occupied by at least three consecutive weft threads in the warp direction.

A porous combustor liner for a gas abatement system is provided. The combustor liner includes a hollow body defined by a wall, the wall including a plurality of interconnected substantially concentric layers. Each layer of the wall includes a substantially regular pattern of voids; wherein the substantially regular pattern of voids of each layer is configured such that it is out of phase with one or more adjacent layers, and wherein the wall includes a sufficient number of layers arranged such that the wall is optically opaque when viewed from the outside along any radially inward direction normal to the wall.

A combustion membrane for a gas burner includes a base fabric forming a metal thread braid including multi-fiber warp threads and multi-fiber weft threads transverse to the multi-fiber warp threads. The base fabric is made on a loom and the multi-fiber warp and weft threads each include a bundle of a plurality of metal fibers having a fiber thickness less than 50 micrometers. The combustion membrane also includes a plurality of monofilament metal threads each having a monofilament thickness greater than 100 micrometers, that are directly woven into the base fabric by loom weaving to increase the stiffness of the combustion membrane.

A combustion membrane (14) for a gas burner (2) comprises a fabric (21) having two opposite fabric surfaces (19, 20) which form a combustion surface (19) exposed on the outer side (17) and an inner surface (20) facing an inner side (18), respectively, wherein the fabric (21) forms an interlacement of metal threads (22) comprising warp threads and weft threads transverse with respect to the warp threads, wherein both fabric surfaces (19, 20) form high-relief ribs (23) alternating with low-relief sags (24), and the ribs (23) comprise: - weft ribs (25) formed by weft threads and extending in the weft direction (26) arranged in weft rib sequences (25') aligned along weft directions (26) substantially straight and parallel to one another, and - warp ribs (27) formed by warp threads and extending in the warp direction (28) and arranged in zigzag warp rib sequences (27'), wherein all the warp threads participate in the formation of said warp ribs (27) in an alternating and repetitive manner along the extension thereof in the warp direction (28).

An apparatus for generating electricity via thermophotovoltaic (TPV) energy conversion is described. High efficiency is obtained by introducing a material into a combustion chamber that emits bright near-monochromatic visible light upon heating. This light is then directed to fall on an array of photovoltaic (PV) cells which convert the light to electricity. Heat and infrared radiation that is not absorbed by the PV cells is returned to the combustion chamber to further improve conversion efficiency.

A combustion film (14) for a gas burner (2) comprises a fabric (21) having two opposing fabric surfaces (19, 20) forming, respectively, a combustion surface (19) exposed on an outer side (17) and an inner surface (20) facing an inner side (18), where the fabric (21) forms an interlace of metal wires (22) comprising warp threads and weft threads transverse to the warp threads; wherein the two fabric surfaces (19, 20) form highly undulating ribs (23) alternating with the low undulating recesses (24), and the ribs (23) comprise:-weft ribs (25) formed by weft yarns and extending in a weft direction (26), the weft ribs being arranged as weft rib sequences (25 ') aligned in the substantially straight weft direction (26) and parallel to each other; and-warp ribs (27) formed by the warp threads and extending in a warp direction (28) and arranged in a zigzag warp rib sequence (27 ') in which all the warp threads participate in the formation of the warp ribs (27) in an alternating and repeating manner along the extension of the warp threads in the warp direction (28).

A method of forming a gas burner membrane. The method comprises forming a plurality of holes in a sheet of material. The holes are formed by laser cutting a required pattern of holes in the sheet of material.

A burner includes a mixing chamber having therein a space in which fuel and air are mixed to form a mixture, a chamber lower cover that is coupled to the mixing chamber while covering an opening formed in the mixing chamber in a reference direction and has a combustion opening opened in the reference direction, a porous distribution unit that includes a metallic sintered material, through which the mixture passes in the reference direction, and covers the combustion opening, a distribution plate that has a plurality of distribution through-holes, through which the mixture passing through the porous distribution unit passes, and covers the combustion opening on the downstream side of the porous distribution unit in the reference direction, and an ignition unit that covers the combustion opening on the downstream side of the distribution plate to ignite the mixture passing through the distribution plate.

A combustion membrane (14) for a gas burner (2) comprises a fabric (21) having two opposite fabric surfaces (19, 20) which form a combustion surface (19) exposed on the outer side (17) and an inner surface (20) facing an inner side (18), respectively, wherein the fabric (21) forms an interlacement of metal threads (22) comprising warp threads and weft threads transverse with respect to the warp threads, wherein:both fabric surfaces (19, 20) form high-relief ribs (23) formed by a main float thread (25), respectively, extending straddling exactly three underlying transverse threads, and wherein a side thread bridge (25′), extending straddling exactly one underlying transverse thread, is formed on both longitudinal sides of each main float thread (25), so that the main float thread (25) and the two side thread bridges (25′) delimit a cross thread configuration (25″) formed by mutually parallel threads.

A hydrogen gas burner includes a first, axially extending, tubular pipe having an axial slot in a sidewall thereof. An axially elongate duct projects radially outwardly from the axial slot and is in fluid communication with an interior of the pipe. The axially elongate duct has through-holes formed through a wall thereof, communicating the interior of the pipe with an exterior thereof. A second, axially extending, tubular pipe, has an axial opening in a sidewall thereof, the axial opening spanning at least a portion of an axial extent of the second pipe. The first pipe is substantially nested within the second pipe and the axially elongate duct projects radially outwardly through the axial opening. A combination gas valve and pressure regulator fluidly connects hydrogen gas with the first pipe. An igniter ignites and initiates combustion of the hydrogen gas exiting from the first pipe and duct via the through-holes.

The utility model discloses a fire grate and gas equipment, and relates to the technical field of combustion. Wherein the fire grate comprises a shell, a combustion cover and a metal net, and an airflow channel is formed in the shell; the combustion cover is arranged at the top of the shell and provided with a plurality of first fire holes communicating with the airflow channel. A plurality of first riveting parts are arranged on the top surface of the combustion cover; the metal net is arranged on the upper surface of the combustion cover and covers the first fire holes. The metal net is pressed and fixed to the upper surface of the combustion cover through the first riveting parts. According to the technical scheme, the height of flames can be reduced, the flames are uniform, and the purposes of sufficient combustion and reduction of nitrogen oxide emission are achieved.

A combustion membrane (14) for a gas burner (2) comprises a fabric or mesh (21) of interlaced metal wires (22), having two opposite interlacing surfaces (19, 20) forming a combustion surface (19) and an inner surface (20) of the fabric / mesh (21), respectively, wherein the metal wires (22) are formed by continuous metal fibers (22') which form a yarn (22) of mass by length in the range from 0.8 g / m to 1.4 g / m.

A combustion film (14) for a gas burner (2) comprises a fabric (21) having two opposing fabric surfaces (19, 20) forming, respectively, a combustion surface (19) exposed on an outer side (17) and an inner surface (20) facing an inner side (18), where the fabric (21) forms an interlace of metal wires (22) comprising warp threads and weft threads transverse to the warp threads; the fabric surfaces (19, 20) form high relief ribs (23) formed by main float threads (25), the high relief ribs (23) each extending across exactly three underlying transverse threads, and wherein side thread bridges (25 ') are formed on both longitudinal sides of each main float thread (25), the side thread bridges (25') extending across exactly one underlying transverse thread, and wherein the side thread bridges (25 ') are formed on both longitudinal sides of each main float thread (25). The main floating thread (25) and the two side thread bridges (25 ') define an intersecting thread configuration (25 ") by mutually parallel threads.

To significantly improve the combustion of a fuel gas containing at least 95 vol% hydrogen in a gas burner (10) for heating purposes, a burner body (16) for the gas burner (10) has been proposed, which, as a burner surface (38) for the passage of a premixed fuel gas-air mixture into a combustion chamber (14), has a perforated metal surface (40) which has through-holes (48) such that less than 5% of the burner surface (38) is open, wherein the through-holes (48) have hole diameters D with 0.4 mm ≤ D ≤ 1.0 mm, wherein the hole diameters D and / or hole lengths of the through-holes vary.

The disclosure relates to a gas-heated infrared radiation emitter comprising at least one radiating screen, which is for example made of ceramic and / or metal, in the form of at least one plate comprising a lower main surface and an upper main surface that are distant from each other, and a plurality of through-prisms, which are preferably hollow, extending from the lower main surface to the upper main surface, each prism being defined by a polygonal base and by an axis. The prisms may be juxtaposed with one another so that their polygonal bases form a tiling of at least one portion of the lower and upper main surfaces of said plate.

A combustor is provided with: a combustion cylinder that forms a combustion chamber for combusting fuel; the at least one nozzle pipe is arranged in the combustion cylinder and is used for spraying gas containing the fuel or the air to the combustion chamber; and a nozzle plate which extends inside the combustion cylinder along a plane orthogonal to the axial direction of the combustion cylinder and which has at least one hole into which the tip of each of the at least one nozzle tube is fitted, a hole-forming portion of the nozzle plate, which forms the at least one hole, contains SiC or graphite, and the nozzle plate is provided with at least one nozzle tube. The front end portion of the nozzle tube is made of an Fe-Cr-Al alloy.

The present invention provides a phase boundary coherent refractory alloy and its preparation method and application, which belong to the field of powder metallurgy. In the phase boundary coherent refractory alloy, the oxide of the second phase high melting point metal forms a coherent phase interface with the refractory metal, and the oxide of the second phase high melting point metal is dispersed in the refractory metal. The preparation method is to prepare a nano-core-shell refractory alloy powder by a gel-combustion method combined with hydrogen reduction, and then quickly achieve densification by a two-step sintering technology to obtain a phase boundary coherent refractory alloy; the average particle size of the refractory alloy powder is less than 50nm, the relative density of the refractory alloy exceeds 98%, and the grain size is less than 1.0μm. The refractory alloy powder with a nano-core-shell structure of the present invention can effectively reduce the densification temperature, effectively prevent the growth of grains through a two-step sintering technology, reduce porosity, and increase density, and finally obtain an ultrafine-grained high-density refractory alloy material with a coherent phase interface.

A burner includes a mixing chamber having therein a space in which fuel and air are mixed to form a mixture, a chamber lower cover that is coupled to the mixing chamber while covering an opening formed in the mixing chamber in a reference direction and has a combustion opening opened in the reference direction, a porous distribution unit that includes a metallic sintered material, through which the mixture passes in the reference direction, and covers the combustion opening, a distribution plate that has a plurality of distribution through-holes, through which the mixture passing through the porous distribution unit passes, and covers the combustion opening on the downstream side of the porous distribution unit in the reference direction, and an ignition unit that covers the combustion opening on the downstream side of the distribution plate to ignite the mixture passing through the distribution plate.

A combustor for a gas turbine engine includes a liner surrounding a fuel and air mixing body. A fuel supply passage communicates into an open fuel plenum downstream of the fuel supply passage. A wall of the mixing body has air openings to receive air flow, and communicate air into mixing passages. The mixing passages pass through the fuel plenum. Fuel openings in the mixing passages to allow fuel to flow from the mixing passage and mix with the air. There are passage sections extending downstream of the fuel plenum, such that the mixed air and fuel travels downstream of the fuel plenum and into a combustion chamber. A gas turbine engine is also disclosed.